Finding the Fourth Proportional to 1,367.62, 1,887.25 and 778.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.62 : 1,887.25 = 778.10 : x
2. Step 2: Convert to fraction form
   1,367.62/1,887.25 = 778.10/x
3. Step 3: Cross multiply
   1,367.62x = 1,887.25 × 778.10
4. Step 4: Simplify right side
   1,367.62x = 1,468,469.23
5. Step 5: Solve for x
   x = 1,468,469.23/1,367.62
6. Step 6: Final answer
   x = 1,073.74